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Finding the Fourth Proportional to 656,788.49, 906,367.70 and 354,982.49

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Solution

The fourth proportional to 656,788.49, 906,367.70 and 354,982.49 is: 489,875.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,788.49 : 906,367.70 = 354,982.49 : x
  2. Step 2: Convert to fraction form
    656,788.49/906,367.70 = 354,982.49/x
  3. Step 3: Cross multiply
    656,788.49x = 906,367.70 × 354,982.49
  4. Step 4: Simplify right side
    656,788.49x = 321,744,656,694.82
  5. Step 5: Solve for x
    x = 321,744,656,694.82/656,788.49
  6. Step 6: Final answer
    x = 489,875.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.